<div class="nav nav-pills nav-stacked default-first-menu-wrapper">
   <li class="dropdown">
       <a href="{{ url_for('index') }}">Dashboard</a>
   </li>
	<li class="dropdown">
       <a href="#collapse1" class="dropdown-toggle" data-toggle="collapse">asd</a>
       <ul id="collapse1" class="collapse default-second-menu-wrapper nav nav-pills nav-stacked">
           <li><a href="#">123</a></li>
           <li><a href="#">123</a></li>
           <li><a href="#">123</a></li>
       </ul>
   </li>
</div>